Phenol-containing wastewater removal device and process
A technology for the removal of phenolic wastewater, applied in water pollutants, petroleum industry, adsorption water/sewage treatment, etc., can solve the problems of microorganisms being toxic and unable to effectively remove pollutants, so as to save energy, manpower and time, The effect of reducing expenses
Active Publication Date: 2014-06-11
洛阳智方环保技术有限公司
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Problems solved by technology
For phenol-containing wastewater, simple physical or chemical methods cannot effectively remove pollutants, while biological methods have limitations on the site and operation process, and when the content of phenolic substances is high, it is also toxic to microorganisms
Method used
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Embodiment 1-13
[0041] A certain amount of activated carbon was added to the activated carbon adsorption tank, and waste water was introduced into it, and a certain flow rate was controlled so that the waste water flowed through the activated carbon layer from bottom to top, and the effluent was discharged into the storage tank. The experimental results are shown in Table 1.
[0042] Table 1.
[0043]
[0044] As can be seen from Table 1, when using the technical solution of the present invention to process the phenol-containing wastewater of the embodiment, the optimal treatment parameters are respectively: the pH of the wastewater is controlled at 2-7 during adsorption, the water flow rate is 10m / h, and the amount of activated carbon used is 1.5 -2.0g / L, the adsorption temperature is room temperature, the removal rate will decrease if the temperature is too low or too high, but this method is still applicable in cold winter.
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The invention discloses a phenol-containing wastewater removal device and process. The phenol-containing wastewater removal device comprises an activated carbon adsorption tank, a water storage pond, an alkaline liquid tank, a sodium phenolate solution tank, an acid liquid tank, an extraction tower, a solvent tank and a water pump, wherein the activated carbon adsorption tank comprises a first adsorption tank and a second adsorption tank which are connected in series. The removal process comprises the steps of flowing the phenol-containing wastewater through an activated carbon layer in the adsorption tank to regenerate adsorption-saturated activated carbon; then, continuing to adsorb wastewater after washing the saturated activated carbon to be neutral; reducing sodium phenolate into phenol in the sodium phenolate solution tank; and removing an oil layer in the extraction tower so as to recover phenols. According to the technical scheme of the invention, the process is simple in operation, good in water treatment effect, high in regeneration efficiency and capable of recycling activated carbon; in addition, phenol substances can be recovered after regenerated so that the wastewater treatment cost is greatly reduced.
Description
technical field [0001] The invention relates to a wastewater treatment device and a treatment method in the chemical industry, in particular to a device and a process for removing phenol-containing wastewater. Background technique [0002] The rapid development of industrialization produces more and more wastewater, which will pose a major threat to the earth's environment and human health if it is not treated in time. Phenols are important chemical raw materials and intermediates, widely used in the paper industry, petroleum industry, printing and dyeing industry, and the preparation of various pesticides, etc. Because they are difficult to degrade, they bring great changes to wastewater treatment . Phenolic organic substances are highly toxic. Low concentrations can denature proteins, and high concentrations can precipitate proteins, which can directly damage various cells and strongly corrode skin and mucous membranes. Long-term drinking of phenol-contaminated water can...
Claims
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Inventor 张占晓刘亚莉刘万平杨凯刘大勇
Owner 洛阳智方环保技术有限公司